Having no problems is the biggest problem of all.

I’m proud to be Japanese and I wanted my country to succeed. I believed my system was a way that could help us become a modern industrial nation. That is why I had no problem with sharing it with other Japanese companies, even my biggest competitors.

Costs do not exist to be calculated. Costs exist to be reduced.

Something is wrong if workers do not look around each day, find things that are tedious or boring, and then rewrite the procedures. Even last month's manual should be out of date

It takes great effort to follow the rules of a pull system ... thus a half-hearted introduction of a pull system brings a hundred harms and not a single gain.

Standards should not be forced down from above but rather set by the production workers themselves.

Data is of course important in manufacturing, but I place the greatest emphasis on facts.